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3 years ago

Help me on the assignment please!

Mathematics

1 answer:

trasher [3.6K]3 years ago

6 0

Fever, tiredness and joint pain (all the symptoms in the middle circle where they all overlap)

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Multiply (3x-1)(-x+4)

iogann1982 [59]

Answer:

$-3x^{2}+13x-4$

Step-by-step explanation:

You can use the foil technique (first outer inner last)

(3x - 1)(-x + 4) = (3x · (-x)) + (3x · 4) + ((-1) · (-x)) + ((-1) · 4)

= $-3x^{2}+12x+x-4$

= $-3x^{2}+13x-4$

5 0

3 years ago

Find k if (x-3) is a factor of <img src="https://tex.z-dn.net/?f=%20k%5E%7B2%7D%20%20x%5E%7B2%7D%20-kx-2" id="TexFormula1" title

cluponka [151]

$w(x)=k^2x^2-kx-2\\\\(x-3)\ is\ a\ factor\ w(x)\ then\ w(3)=0.\\\\Substitute:\\\\k^2\cdot3^2-k\cdot3-2=0\\9k^2-3k-2=0\\9k^2-6k+3k-2=0\\3k(3k-2)+1(3k-2)=0\\(3k-2)(3k+1)=0\iff3k-2=0\ \vee\ 3k+1=0\\3k=2\ \vee\ 3k=-1\\\\\underline{\underline{k=\frac{2}{3}\ \vee\ k=-\frac{1}{3}}}$

4 0

3 years ago

Read 2 more answers

PLEASE HELP! Write an algebraic expression to solve this problem. A number quadrupled AGAIN is 272. What is the number? Show you

garri49 [273]

$4(N)=272

Divide by 4 on both sides

(N)= 272/4

(N)=68$

6 0

3 years ago

A bicycle trail in the shape of a circle has a diameter of 3 miles michelle biked around the trail 4 times about how far did mic

lawyer [7]

Answer:

12PI miles

Step-by-step explanation: Circumference of a circle is PI*diameter. In this case it is obligatory just to multiply by 4, because he encircles is 4 times. So the answer is: P=4*3*PI=12PI. If you need detailed answer you can multiply by p=3.14;

5 0

3 years ago

75% increase followed by 50% decrease is it greater than to original

IceJOKER [234]

Answer:

Set original amount = x

<u>After a 75% increase, it would become</u>

x + 75%x = x + 0.75x = x(1 + 0.75) = 1.75x

<u>After a 50% decrease, it would become</u>

1.75x - 50%(1.75x) = 1.75x - 0.5(1.75x) = 1.75x - 0.875x = 0.875x = $\frac{7}{8} x$

Because $\frac{7}{8} x$ is less than x, the new amount would be less than the original.

7 0

3 years ago